Panasonic SA-AK770PL Service Manual page 53

Step 3 Remove the Regulator Diode (D5802) from the heat
sink unit C.
Caution: Handle the heat sink unit C with caution due to its
high temperature after prolonged use. Touching it may
lead to injuries.
Note: Refer to the diagrams of SMPS P.C.B. (Item 19.6.) for
location of the part.
8.33.1. Assembly of Regulator Diode
(D5802)
Step 1 Apply grease to the heat sink unit C.
Step 2 Fix and screw the Regulator Diode (D5802) to the heat
sink unit C.
Special Note: Ensure the Regulator Diode (D5802) is tightly
screwed to the heat sink unit C.
Step 3 Solder pins of the Regulator Diode (D5802) on the
reverse side of SMPS P.C.B..
Special Note: Ensure pins of the Regulator Diode (D5802) are
properly seated and soldered on SMPS P.C.B..
8.34. Replacement of Regulator
Diode (D5803)
• Follow the (Step 1) - (Step 5) of Item 8.4
• Follow the (Step 1) - (Step 12) of Item 8.5
• Follow the (Step 1) - (Step 6) of Item 8.22
• Follow the (Step 1) - (Step 5) of Item 8.29
Step 1 Desolder pins of the Regulator Diode (D5803) on the
reverse side of SMPS P.C.B..
Step 2 Remove 1 screw from the Regulator Diode (D5803).
Step 3 Remove the Regulator Diode (D5803) from the heat
sink unit C.
Caution: Handle the heat sink unit C with caution due to its
high temperature after prolonged use. Touching it may
lead to injuries.
53
SA-AK770PL / SA-AK770GCP